Safety data for hydrochloric acid (concentrated)

General

Synonyms: muriatic acid, chlorohydric acid. [Data for dilute Hydrochloric acid can be found here.]
Molecular formula: HCl
CAS No: 7647-01-0
EC No: 231-595-7
Annex I Index No: 017-002-01-X

Physical data

Appearance: clear colourless or slightly yellow liquid with pungent odour. Concentrated acid is fuming.
Melting point: -25 C
Boiling point: 109 C
Specific gravity: 1.19
Vapour pressure:
Flash point:
Explosion limits:
Autoignition temperature:
 

Stability

Stable. Avoid heat, flames. Incompatible with most common metals, amines, metal oxides, acetic anhydride, propiolactone, vinyl acetate, mercuric sulphate, calcium phosphide, formaldehyde, alkalies, carbonates, strong bases, sulphuric acid, chlorosulphonic acid.

Toxicology

Extremely corrosive. Inhalation of vapour can cause serious injury. Ingestion may be fatal. Liquid can cause severe damage to skin and eyes. TLV 5 ppm.

Toxicity data
(The meaning of any abbreviations which appear in this section is given here.)
ORL-RBT LD50 900 mg kg^-1
IPR-MUS LD50 40 mg kg^-1
IHL-RAT LC50 3124 ppm/1h.
IHL-HMN LCLO 1300 ppm 30min

Risk phrases
(The meaning of any risk phrases which appear in this section is given here.)
R23 R24 R25 R34 R36 R37 R38.
 

Transport information

(The meaning of any UN hazard codes which appear in this section is given here.)
UN No 1789. Packing group II. Hazard class 8.0. Transport category 2.

Environmental information

Lethal to fish from 25 mg/l up. Toxic for aquatic organisms due to pH shift.

Personal protection

Safety glasses or face mask, gloves. Effective ventilation.

Safety phrases
(The meaning of any safety phrases which appear in this section is given here.)
S26 S36 S37 S39 S45.

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This information was last updated on August 12, 2004. Although we have tried to make it as accurate and useful as possible, we can take no responsibility for its use or misuse.

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